Where an acronym is used for an organisation then this will appear in the Organisations section.

  ABA : Abscisic Acid.

  ACAS : Agricultural Chemicals Approval Scheme.

  ACC : Acrylic Colour Coat.

  ACHIEVE [1] : Assess, Creative, Hone, Initiate, Evaluate, Valid, Encourage. A 7-stage coaching model.

  ACOP : Approved Code of Practice.

  ADDIE : Analysis, Design, Development, Implementation, and Evaluation.

  ADP : Adenosine diphosphate.

  AE : Acid Equivalent.

  AFP : Air-Filled Porosity.

  AGP [1] : Artificial Grass Pitch.

  AGP [2] : Artificial Grass Paint.

  AGQ : Applied General Qualification.

  AI [1] : Active Ingredient.

  AI [2] : Activity Index.

  AI [3] : Artificial Intelligence.

  AI [4] : Advanced Intelligence.

  ALARP : As Low As Reasonably Practicable.

  AM : Arbuscular Mycorrhiza. Also called Endomycorrhiza.

  AMG : Annual Meadow Grass.

  AMP : Adenosine Monophosphate.